Rafael Arnez McCloud allegedly had killed once before. More than eight months later — and days after escaping a Mississippi jail — he appeared poised to kill again. Wielding a bloody knife, he held a man, a woman and their 5-year-old son hostage in a bathroom of their Vicksburg home.But this time, he was the one who ended up dead.Early Thursday, the 24-year-old wife and mother, who’d been allowed to ...